Westermo FD-80 - Manual (Page 18)

18 6630-2281
Technical data
Device type FD-80_A
GSD-file FD-80_A.gsd
Profibus DP
Input data Up to 8 modules, max 64 word data
(include 1 word status)
Output data Up to 8 modules, max 64 word data
(include 1 word command)
Ethernet
Addressable slaves Max 64
Transfer mode Master, Addressed mode
Ethernet TCP/IP
Profibus DP Profibus DP Profibus DP Profibus DP
CHANNEL 4
FD-80 (A)
HUB
Profibus DP master
CHANNEL 4
FD-80 (P)
HUB
Profibus DP master
HUB
FD-80 (P)
CHANNEL 4
Profibus DP master
CHANNEL 4
FD-80 (P)
HUB
Profibus DP master
7.2 Addressed FD-80 (A)
One FD-80 (A) at the local side communicates with one or many addressed FD-80 (P)
at the remote side.
Master – slave transfer mode, where FD-80 (A) is the master which initiates the transfer.
It transfers specified Profibus DP data from the input /output buffer, via Ethernet, on
demand from a Profibus DP master.
The data frames include the transfer slave address of the selected remote FD-80 (P).
The remote FD-80 (P) units are transfer slaves, which wait for received frames including
the correct slave address, before sending back one frame to the FD-80 (A).
Additional programming in the Profibus DP master (PLC)is needed, such as addressing,
transfer control and check.